William Patrick Ackley, M.D.
Nephrology Physician · New Haven, CT
William Patrick Ackley, M.D. is a nephrology physician with a practice address in New Haven, Connecticut, and NPI 1225565906, issued on May 12, 2017. Check the license (Connecticut 07112, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- William Patrick Ackley
- Credential
- M.D.
- Primary taxonomy
- Nephrology Physician 207RN0300X
- License number
- 07112 CT
Self-reported in NPPES; status is on the state search - Practice location
- 20 York St, New Haven, CT 06510
- Phone
- (203) 688-4242
- Enumerated
- May 12, 2017
- Record last updated
- Jun 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20221021000595); accepts Medicare assignment
- Medical or professional school
- New York University School Of Medicine, 2017
- Entity
- Type 1 · individual
Also registered at 20 York St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cyrena Abbasi, MDStudent in an Organized Health Care Education/Training Program1609703289
- Ali Abboud, MD, MBAStudent in an Organized Health Care Education/Training Program1942943097
- Basil Abdalla, MDStudent in an Organized Health Care Education/Training Program1154905057
- Jasmina AbdallaStudent in an Organized Health Care Education/Training Program1700638590
- Sarah AbdallahPsychiatry Physician1740800952
- Usama Abdelghany, PHARM DOncology Pharmacist1548827843
Verify William Patrick Ackley in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 07112Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
48% fewer Medicare Part D claims than the average nephrology physician in 2024
762 Medicare Part D claims for 140 beneficiaries, against an average of 1,465 among the 10,986 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims.
Most prescribed
- Torsemide76 claims
- Losartan Potassium47 claims
- Amlodipine Besylate42 claims
- Potassium Citrate Er42 claims
- Jardiance40 claims
- Sevelamer Carbonate35 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 79.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $30.90
2 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 8,230 providers of this specialty with any payment received $3,091.37 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- University OF Connecticut Health CenterFarmington, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Nephrology Physician providers in Connecticut
There are 167 nephrology physician records in Connecticut.
Other nephrology physician records in Connecticut
- Mervet Abouelkair, M.D.New Britain, CT1740295112
- Ali Abu-Alfa, MDNew Haven, CT1841274610
- Nancy Adams, M.D.Farmington, CT1770588592
- Bayode Afolalu, M.D.Orange, CT1548442726
- Abinet Aklilu, MDNew Haven, CT1710331780
- Feras Al Shami, M.D.New Britain, CT1982086765
- Robert Alpern, MDNew Haven, CT1477785285
- Peter Aronson, MDNew Haven, CT1124002985
- William Asch, M.D., PH.D.New Haven, CT1003933326
- Badamkhand Baatarkhuu, M.D.Danbury, CT1528334380
Common questions
What is William Patrick Ackley, M.D.'s NPI number?
William Patrick Ackley, M.D.'s National Provider Identifier (NPI) is 1225565906, issued on May 12, 2017. An NPI identifies a provider in billing; it is not a license.
Where is William Patrick Ackley, M.D. located?
The NPPES record lists a practice address at 20 York St, New Haven, CT, 06510. Phone: (203) 688-4242. Providers update this record themselves, so call before visiting.
How can I verify William Patrick Ackley, M.D.'s license?
NPPES lists Connecticut license number 07112, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Patrick Ackley, M.D. prescribe under Medicare Part D?
In 2024, William Patrick Ackley, M.D. had 762 Medicare Part D claims for 140 beneficiaries; the average among nephrology physician prescribers was 1,465. Part D covers Medicare prescriptions only.
What is William Patrick Ackley, M.D.'s MIPS final score?
The 2023 MIPS final score is 79.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.